Description
Nonparametric unfolding item response theory (IRT) model for dichotomous data (see W.H. Van Schuur (1984). Structure in Political Beliefs: A New Model for Stochastic Unfolding with Application to European Party Activists, and W.J.Post (1992). Nonparametric Unfolding Models: A Latent Structure Approach). The package implements MUDFOLD (Multiple UniDimensional unFOLDing), an iterative item selection algorithm that constructs unfolding scales from dichotomous preferential-choice data without explicitly assuming a parametric form of the item response functions. Scale diagnostics from Post(1992) and estimates for the person locations proposed by Johnson(2006) and Van Schuur(1984) are also available. This model can be seen as the unfolding variant of Mokken(1971) scaling method.
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| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | NOTE |
| r-devel-linux-x86_64-fedora-gcc | NOTE |
| r-devel-macos-arm64 | NOTE |
| r-devel-windows-x86_64 | NOTE |
| r-oldrel-macos-arm64 | NOTE |
| r-oldrel-macos-x86_64 | NOTE |
| r-oldrel-windows-x86_64 | NOTE |
| r-patched-linux-x86_64 | NOTE |
| r-release-linux-x86_64 | NOTE |
| r-release-macos-arm64 | NOTE |
| r-release-macos-x86_64 | NOTE |
| r-release-windows-x86_64 | NOTE |
Check details (14 non-OK)
NOTE
r-devel-linux-x86_64-debian-clang
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-devel-linux-x86_64-debian-gcc
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-devel-linux-x86_64-fedora-clang
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-devel-linux-x86_64-fedora-gcc
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-devel-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-devel-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-oldrel-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-oldrel-macos-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-oldrel-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-patched-linux-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-release-linux-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-release-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-release-macos-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
NOTE
r-release-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
| ^
Check History
NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
NOTE
r-devel-linux-x86_64-debian-clang
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-devel-linux-x86_64-debian-gcc
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-devel-linux-x86_64-fedora-clang
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-devel-linux-x86_64-fedora-gcc
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-devel-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-devel-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-patched-linux-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-release-linux-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-release-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-release-macos-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-release-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-oldrel-macos-arm64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-oldrel-macos-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
NOTE
r-oldrel-windows-x86_64
Rd files
checkRd: (-1) coef.mdf.Rd:17: Lost braces; missing escapes or markup?
17 | \item{type}{: Argument that controls the type of parameters to be returned. If \code{type="persons"} (default), a vector with the person parameters is returned. When \code{type="items"} then a vector with the item ranks obtained by the MUDFOLD item selection algorithm is returned. If {type="all"} then a list with both person and item coefficients is returned to the user.
|
Dependency Network
Version History
new
1.1.21
Mar 9, 2026